Type-writing machine.



ATTORNEYS No. 881,910. PATENTED MAR. 1'7, 1908.

" P. J. DYETT.

TYPE WRITING MACHINE.

2 SHEETS-SHEET 1.

TYPE WRITING MACHINE.

APPLIOATION FILED APB. 21.1904.

PATENTED MAR. 17, 1908. F. J. DY-BTT.

2 SHEETS-SHEET 2.

WITNESSES:

- UNITED STAiFEiIllgENT OFFICE.

FRANK J. DYETT. OF ILION, NEW YORK.

axially of said spools.

TYPE-WRITING MACHINE.

Specification 0! Letters Patent.

Patented March 17, 1908.

a lication m aatru' 21, 1904. Serial No. 204,166.

'Ilion, in the county of Herkimer and State of New York, have invented.,a certain new and useful Type-Writing Machine, of which the fdllowing is a s ecification.

vMy invention re ates to type-writing machines, and particularly to means for advancing the ribbon step by step, and for automatically reversing its direction of travel or feed, and the object thereof, is to provide a ribbon-feeding mechanism which is articularly simple in construction and high y efficient in operation.

To this end, the invention comprises the combination and arrangement of compo nent parts to be hereinafter set forth and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 shows in side elevation a fragmentary part of a type-writing machine including one embodiment of my ribbon-feeding mechanism.

Fig. 2 is a front elevation of the same. Fig.

3 is asectionalview, partly in elevation, of

the ribbon-spools andzadjacent parts, talten Fig. 4 is a top plan of parts seen in. Figs. 1 and 2. Fig. 5 and 6 are ,detail views, partly in section, of the excapement-mechanism for the paper-carriage, and a portion of the means for transmittingmotion from said mechanism to the ribbon-spools.

1 is a part of the frame of a ty e-writing if machine, and 2 is a shaft journa ed in the frame 1, and having one end provided with amember, as :1. P1111011 3, for engaging the ordinary paper-carriage, not illustrated, and its other end provided with a member, as a ratchet-wheel 4, of an escapement-mechanby the pinion 3.

ism for controlling the rotation of the shaft 2. Suitable means, as a spring, not shown, is connected to the a ,er-carriage and con stantly tends to feer tie same, and to thus rotate the shaft 2 connected to said carriage The ratchet-wheel 4 is here shown as cooperating with two detents, one 5, being fixed to the up er end of a rocking upright or arm 7, and t e other 6, being iv'oted' to said upright or arm, and engaged y a spring 8 for forcing the same into en agernent with a stop 9. A roc -shaft 10 is ed to the lower end of the upright or arm 7, is journaled in a post 11 depending from the frame 1, and is provided with a fixed horizontally-extending arm 12 which is held a in its normal position by any desirable means, as a spring 13, connected to the frame 1, and is rocked from such position by a link 14 connected to suitable means, as the universal key-actuated bar, not illustrated, of the machine, its axis, the detents 5 ,6 are alternately engaged with the ratchet-wheel 4, and thus serve to permit the same to rotate or advance step b step. It is thought'unnecessary to furt er describe this escapement- As the shaft .10 is rocked on mechanism, as it is not an essential feature of the present invention, but forms the subject-matter of my pending'application Sr. No. 216,790 filed July 16, 1904. It will be understood, however, that any desirable es- .capement-mechanism may be used-to control the rotation of the shaft 2, and thereby the feed of the paper-carriage.

15 are ribbon-spools, supported at opposite sides of the post 11 upon a barrel 150 extending transversely at the lower end of the post, and having its opposite ends slightly reduced in diameter to form spindles for the spools; A suitable shaft 16 rotates the spools and is preferably journaled in the barrel 150. The diameter of the bore of the barrel is usually enlarged here illustrated asat each end to provide annular spaces about the shaft 16 for the reception of sleeves 17, which fit therein, are removably held in place by screws 18 extending radially through the barrel and engaging the inner ends of the sleeves, and are provided with outwardl -extending flanges 19 at their outer on s. Said spools 15 are confined betweenthe flanges 19 and annular shoulders 20 on the barrel 150, and are thus prevented from endwise movement on said bar- 23 and normally engaged with the wheel 21,-

a stationary knockoff 25 for cooperating with the inclined surface 23, a lever 26 pivoted to the post 11 intermediate of its ends and ,hav-

ing one extremity-connected to the lower end of the pawl 22 and its other eXtremit connected to aspring 27 a pawl 28 depen ing from said other extremity of the lever 26, and a ratchet-wheel 29 fixed to the'shaft 16 and engaged by the free end of the pawl 28.

' ,enever the es'ca ement-mechanism per mits the shaft'2 to a Vance a single step, the

ratchet-wheel 21 engaged with the tooth 24 elevates the pawl 22against the actionof the spring 27, and simultaneously depresses the 1 pawl 28, and advances the ratchet-wheel 29 land the shaft 16 a corresponding step.-

I During the upward movement of the pawl 22, the inclined surface 23 coacts with the stationary projection'or knockofi 25, and gradually moves the 1:. per end of said pawl from the ratchet-wheef21, until just before .the shaft 2 reaches the limit of an advance step, at which time, the pawl 22 has been i K moved sufficiently by thepart 25 to disengage the tooth 24 from the wheel 21,- whereupon thespring 27 returns the pawls 22 28 and'the lever 26 to'their normal position.

The part 25 thus 'forms means for consecu.

tively disconnecting from the escapement- "mechanism the means for transmitting motion from said mechanism to rotate the ribhon-spools.

In the construction of ribbon feeding mechanism herein disclosed, the ribbon passes from one of the spools 15, over a suitable guide 33 and then back to the other spool. The guide 33 serves to support the ribbon between the type and the platen during the printing action of the ty e, but it is thought unnecessary to describe said guide, as the same forms no part of the present invention.

My feeding mechanism preferably operates to feed, the ribbon in reverse directions, this result being accomplished by connecting the spools '15 alternatel to the shaft or driving member 16, an by utilizing one spool as a supply for the ribbon, while the other is, connected to the shaft and acts as a winding spoolf Theconnections between the spools 15 and the shaft 16 are here illustrated as clutch-surfaces 34 on the outer sides ,of the spools, and clutch-sections 35 spaced a greater distance apart than the surfaces 34 and provided on the shaft 16 which is shiftable axially in order to alternately engage the sections 35 with the surfaces 34.

Said shaft 16 is frictionally held in its ad justed position by .a lock comprising, shoulders 36 on the shaft 16, formed usually by peripheral, grooves therein, a radially-mow able locking member 37 guided in the barrel 1'50 and having a rounded engaging end, and a spring 38 which holds the member 37 in engagement with the shoulders 36 and is shown 'as located in a guide 39 between the member 37 and a plug 40 forclosing the outer endvof the guide.

I usually provide my ribbon-feeding mech- 'anism with means for shifting the shaft axially automatically at any predetermined point in the feed of the ribbon, as when the same reaches the limit of its movement in either direction. As illustrated this means comprises, inclined surfaces 41 onthe shaft 16, and preferably on the outer sides of the clutch-sections 35, and a shifting lever 42' associated with each spool 15 and having a bailor crank-portion 43 located between the sides of the spool, and its ends pivoted in said sides, the outer end or part of each lever being provided with an extension 44 coacting with the..- contiguous inclined surface 41. The ribbon is attached near each of its ends to the bailor crank-portions 43 of the levers 42, or is provided with means to coact with said bailor crank-portions. As either end, or other predetermined portion, of the ribbon begins to unwind from the su plyspoohit lifts the bail-portion 43 of the everstood upon reference to the foregoing description and the accompanying drawings, and itwill be obvious to those skilled in the art, that more or less change may be made in the construction and arrangement of. the component parts thereof without departing from the spirit of my invention.

Having thus fully described my invention.

what I claim as new and desire to secure by Letters Patent, is

1. In a type-writing machine, the combination with escapement-mechanism for tho carriage including a shaft carrying a'piniou for engaging the carriage; of ribbon-spools. and driving mechanism therefor, interposed between t e same and said escapcmcutmechanism, comprising a ratchet-wheel movable with said shaft, a pawl coacfing therewith, and mechanism actuated by the mo vement of said pawl, substantially as and for the purpose set forth.

2. In a type-writing machine, the combination with escapement-mechanism for the carriage including a shaft carrying a pinion for engaging the carriage; of ribbon-spools, and driving mechanism therefor, interposed between the same and said escapement-mechanism, comprising a ratchet-wheel movable" with said shaft, a reciprocating awl movable as one body eoacting therewit and mechanism actuated by the movement of said pawl, substantially as and for the purpose described.

3. In a type-writing machine, the combination with escapement-mechanism for the carriage including a shaft carrying a pinion for engaging the carriage; of ribbon-spools, and dIlVlIl" mechanism therefor, interposed between the same and said escapementmechanism, comprising a ratchet-wheel, a pawl coacting therewith, a lever carrying said pawl, and mechanism actuated from said lever, substantially as and for the purpose s ecified.

4. n a type-writing machine, the combination with escapement-mechanism for the carriage including a shaft carrying a pinion for engaging the carriage; of ribbon-spools, and (lIlVlIl mechanism therefor, interposed between the same and said escapementmechanism, comprising a ratchetwheel, a pawl coacting therewith, a lever carrying the same, a second pawl carried by said lever, and mechanism actuated thereby, substantially as and for the purpose set forth.

5. In a type-writing machine, the combination with escapement-mechanism for the carriage including a shaft carrying a pinion for engaging the carriage; of ribbon-spools, and drivln mechanism therefor, interposed between t esame and said escapcment mechanism, comprising a ratchet-wheel, a pawl coacting therewith, a lever carrying the pawl at one end, a second pawl carried by the opposite end of the lever, and mechanism actuated by the second pawl, substantially as and for the purpose described.

6. In a type-writing machine, the combination with escapement-meehanism for the carriage includin a rotating member; of ribbon-spools, and riving mechanism therefor, interposed between the same and said rotating member, comprising a ratchet-wheel, a pawl coacting therewith, a lever carrying the pawl, a second pawl carried by said lever, mechanism actuated by the second pawl including a shaft, and clutch-members interposed between the shaft and spools for con; necting the spools alternately to the shaft, substantially as and for the purpose de scribed.

7. In a type-writing machine, the combination with escapement-mechanism for the carriageincluding a rotating member: of ribbon-spools, and driving mechanism therefor, interposed between the same and said rotatcluding two spools, an axially-shiftable drivrom the opposite end of the lever, a toothedwheel operated by the second pawl, a shaft havlng axial shifting movement and carrying said toothed wheel, and clutch-members interposed between the shaft and spools, designed to be alternately brought into and out of engagement withthe latter, substantially as and for the purpose specified.

8. A ribbon-feeding mechanism for typewriting machines for feeding the ribbon in everse directions, comprising ribbon-spools, a driving member, one of said parts having movement relatively to the other in a direction lengthwise of the axis of one of the parts, means for automatically shifting one of the parts, carried by the spools, means for rotat- 1110 the driving member, and means for transmitting the rotary movement thereof to the spools, substantially as and for the purpose set forth.

9. In a ty ewriting machine, the combination with ri bon-feeding mechanism including two spools, an aXially-shiftable driving shaft and clutch members carried thereby for engaging the spools; of devices pivoted to the spools and controlled in their ivotal movement for shifting the shaft by tie ribbon during the feeding movement of the ribbon, substantially as and for the purpose specified.

10. In a type-writing machine, the combination with ribbon-feeding mechanism, in-

ing shaft, and clutch-members carried there by for enga ing the spools; of devices ivoted to the spools and actuated by the ri )bon in the feed of the latter for shifting said shaft,

gublstantially as and for the purpose speci- 11. In a type-writing machine, the combination with ribbon-feeding mechanism, including two spools, an axially-shiftable driving shaft, and clutch-members carried thereby for engaging the spools; of devices piv-v oted at their ends to the spools and having bailor crank-portions actuated by the ribbon to shift said devices for shifting the shaft, substantially as and for the purpose set forth.

12. Ina type-writing machine, the combination with ribbon-feeding mechanism, includlng two spools, an axiallyshiftable shaft, and clutch-members carried thereby for engaging the spools; of devices pivoted to the spools having intermediate portions for engagement with the ribbon and end extensions for shifting the shaft, substantially as and for the purpose set forth.

13. A reversible. feeding mechanism for type-writing nuu-hines, comprising ribbons )ools having clutch-surfaces, a driving shaft shiftabl'e relatively to the spools axially MM .M A

- purpose described.

V the latter, ribbon-spools journaled thereon,

harried thereb and actuating means driving mem machine,

thereof, means for rotating the shaft, clutchmembers carried by the shaft spaced a greater distance apartthan the clutch-surfaces of the spools, and means carried by the spools for'shlfting the shaft to bring one of said clutch-members into en the clutch-surface of one spoo other clutch-member out of engagement with the clutch-surface of the other spool, substantially as and for the purpose set forth.

14; A reversible feeding mechanism for type-Writing machines, spools having clutch-surfaces, a driving shaft shiftable relatively to the spools axially thereof, means for rotating the shaft, clutchmembers carried by the shaft ,having inclined surfaces, and means clined surfaces for shifting said clutch-members, substantially as and for the purpose described.

15. In a reversible ribbon-feeding mechanism for type-writing machines, the combination with ribbon-spools, a driving shaft, and clutch-members associated with each spool for coupling the same to the shaft; of a part carried by each spool coacting with the adjacent clutch-member to shift the same, sub

stantially as and for the purpose specified.

16. In a typewriting machine, the combination with a top-plate, of escapement mechanism supported by the top- I late above the upper face thereof, -a post epending from the top-plate, ribbon spools supported by the post at the lower end thereof, and powertransmitting means between the escapement mechanism and the ribbon spools for rotating said spools, substantially as and for the urpose set forth.

17. In a typewriting machine, the combination with a-toplate formed with a substantially horizontal bearing on its upper side, escapement mechanism comprising a shaft journaled in said bearing, 'a post depending from the top-plate, spools supported y the post, and power-transmitting means between said shaft and the spools for rotating the spools, substantially as and for the 18. In a ribbon-feeding m chanism for machines and in combination, a

type-writing a post, a barrel at the end of main frame, a driving member journaled in the barrel, clutch-connections interposed between'the driving member and the spools, a lever pivoted to said post, an operating pawl therefor er interposed betw'een said member and the lever, substantially as an for the urpose specified.

19. T e combination in a type-writin of ribbon-spools, a ratchet-whee with means for rotating the same, and means interposed between said spools and ratchetagement w1thand move the comprising ribboncoacting with the in-' for the.

knockoff-device coacting with the spring for hpldi wheelfor rotating the former from the latter comprising, a lever, a pawl pivoted at one end thereto, meansfor holding said pawlin engagement with the ratchet wheel, and a stantially as and for the purpose set forth.

20. The combination in a type -writin mach ine, of ribbonspools, a ratchet-whee with means for rotating the same, and means inter osed between said spools and ratchetwhee for rotating the former from the latter comprising, a lever, a pawl having a reciprocatory movement carried by said lever, a

g t with said ratch t-wh e projection forming a knocko acting with said for the urpose descrlbed.

21. he combination in a type -writin machine, of ribbon-spools, with means for rotating the same, and means inter osed between said spools and ratchetwhee for rotating the former from the latter comprising, a lever,

end 1 to said and a stationary fi-member cotooth and an inclined surface at its free end,

means for holding the tooth in engagement with the ratchet-wheel, and a knockoff-device coacting with said inclined surface to shift the toothout of en agement with the ratchet-wheel, substantia ly as and for the purpose specifi d e 22.. The combination in a type-writing machine, of ribbon-spools, a driving member awl in engagement a pawl pivoted'at onelever and having an engaging pawl, sub-.

.80 pawl, substantially as and I a ratchet-whee therefor, a pivoted lever, means-for actuating the driving member as the lever is vibrated, and means for vibrating said lever comprising a ratchet-wheelwith thesame, a pawl carried by. the lever having a tooth for engagement with the ratchet- -wheel, means for holding the tooth in engagement, and a knockoff-device coacting wit the pawl above said tooth, substantially as and for the purpose described.

23. In combination in a type-writing machine, ribbon-s ools, a driving member therefor, a pivoted ever, means for actuating the driving member as the lever is vibrated, and means for vibrating said lever, comprising a ratchet-wheel with meansfor rotating the a substantially verticallydisposed pawl, means for preventing the'displacement of the pawl, an a connection between the pawl and the lever, substantially as and for the purpose specified.

In testimony whereof, -I have hereunto signed m name in the presence of two attesting wltnesses, at gyracuse, in the county (1 of Onondaga, in the State of New York, this means for rotat ng 

